Integrated analysis of drag embedment anchor installation

摘要

During installation of drag embedment anchors (DEAs), the anchor, tensioned mooring line and anchor-handling vessel interact with each other and make up an integrated system. This paper presents an integrated quasi-static model for the anchor, line and vessel for use in simulating the installation of DEAs by moving vessels or stationary vessels. The differences in the anchor's kinematic trajectory, line profiles and tension distributions for these two installation methods were analyzed. The examples indicate that there is a line length for each installation method that optimizes the installation efficiency. The effects of different types and lengths of lines, different types of soil behavior and different fluke-shank angles are also considered in the practical suggestions given for DEA installation.